Three Hikers A, B and C start on a trip with Rs. 50 each and agree to share the expenses equally. If at the end of the trip. A has Rs. 20 left with him, B Rs.30 and C Rs. 40 how must they settle their accounts?

• C must pay Rs. 10 to A
• A must pay Rs. 10 to B
• A must pay Rs. 10 to C
• Can't be settled